Androgen secretion by the testes is stimulated by which hormone?

Androgen secretion by the testes is stimulated by which hormone?

• A. LH
• B. FSH
• C. Testosterone
• D. Gonadotropins

Answer: (A)

In males, the production of testosterone by the testes is driven by luteinizing hormone from the pituitary. LH binds to receptors on Leydig cells, initiating the steroidogenic enzyme cascade that converts cholesterol into testosterone. This is the direct stimulant for androgen secretion. Follicle-stimulating hormone mainly acts on Sertoli cells to support spermatogenesis and does not directly trigger testosterone production. Testosterone itself is the product of this process, not a stimulant, and while gonadotropins as a group include LH and FSH, the specific hormone responsible for driving androgen secretion is LH.

In males, the production of testosterone by the testes is driven by luteinizing hormone from the pituitary. LH binds to receptors on Leydig cells, initiating the steroidogenic enzyme cascade that converts cholesterol into testosterone. This is the direct stimulant for androgen secretion. Follicle-stimulating hormone mainly acts on Sertoli cells to support spermatogenesis and does not directly trigger testosterone production. Testosterone itself is the product of this process, not a stimulant, and while gonadotropins as a group include LH and FSH, the specific hormone responsible for driving androgen secretion is LH.